Oil seals are widely used as sealing devices for machines.

JTEKT's oil seals are described in our catalog, Oil Seals & O-Rings.

However, the catalog uses a large number of technical terms and is very long, so many people seem to have trouble handling it.

Therefore, this series of columns will summarize the following in order:

• The structure, functions, and types of oil seals

• How to select the right oil seal

• Handling of seals, and causes and countermeasures for oil seal failure